scholarly journals Raman Spectroscopy Characterization of Dissolved Polysilicon Byproduct SiCl4 in Ionic Liquids

2018 ◽  
Vol 2018 ◽  
pp. 1-5
Author(s):  
Cheng Cheng ◽  
Chenglong Zhang ◽  
Jiachao Jiang ◽  
En Ma ◽  
Jianfeng Bai ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Alkyl Chain ◽  
Silicon Tetrachloride ◽  
Imidazolium Ionic Liquid ◽  
Imidazolium Cations ◽  
Chain Lengths

Silicon tetrachloride (SiCl4) is the main byproducts of the polysilicon industries. The dissolution behaviors of SiCl4 in imidazolium ionic liquid, including [Bmim]OTf, [Bmim]NTf2, [Hmim]NTf2, and [Omim]NTf2, were investigated for recycling Si from SiCl4. Raman spectroscopy was used to understand the combination between the ionic liquid and SiCl4, and the conductivity of ionic liquids in different conditions was determined. The results indicated that [Bmim]NTf2 exhibited a better SiCl4 dissolving capacity compared to [Bmim]OTf, longer alkyl chain lengths in the imidazolium cations of the ionic liquids exhibited a better performance in dissolving SiCl4, and [Bmim]NTf2 : PC = 1 : 2 exhibited the best conductivity. In addition, molecular bondings between C-Cl, Si-O-Si, and C-Si were formed between the ionic liquids and SiCl4.

Synthesis and Characterization of Supported on Silica Based Ionic Liquids

2015 ◽  
Vol 727-728 ◽  
pp. 34-37
Author(s):  
Li Ying Guo ◽  
Jun Shi ◽  
Jun Hai He ◽  
Ji Yue Huang ◽  
Peng Cheng Huang
Keyword(s):  
Crystal Structure ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Chemical Structure ◽  
Sol Gel ◽  
Synthesis And Characterization ◽  
Imidazolium Ionic Liquid ◽  
Imidazolium Ionic Liquids ◽  
Methyl Imidazole

Three kinds of functionalized imidazolium ionic liquid, 1-chloride (2-hydroxyethyl) -3-methyl imidazole ionic liquid [HeMIM]Cl, 1-bromide ethylamine-3-methyl imidazolium ionic liquid [AeMIM]Br and chlorinated 1-carboxyethyl-3-methyl imidazolium ionic liquid [CeMIM]Cl, were synthesized firstly. Subsequently, three kinds of supported silicon imidazolium ionic liquids were prepared from above ionic liquids with tetraethoxysilane by sol-gel method. The Chemical structure and crystal structure of the supported on silica based ionic liquids were analyzed by FTIR and XRD.

Systematic design of secondary building units by an efficient cation-directing strategy under regular vibrations of ionic liquids

2015 ◽  
Vol 44 (33) ◽  
pp. 14666-14672 ◽  
Author(s):  
Bing An ◽  
Jun-Li Wang ◽  
Yan Bai ◽  
Dong-Bin Dang
Keyword(s):  
Ionic Liquids ◽  
Alkyl Chain ◽  
Systematic Design ◽  
Acid System ◽  
Imidazolium Cations ◽  
Secondary Building Units ◽  
Chain Lengths

A cobalt-1,4-naphthalenedicarboxylic acid system in a systematic series of ionic liquids with different alkyl chain lengths of imidazolium cations governed the construction of four MOFs with regular changes of secondary building units (SBUs).

Preliminary Assessment of the Sorption of some Alkyl Imidazolium Cations as used in Ionic Liquids to Soils and Sediments

2005 ◽  
Vol 58 (3) ◽  
pp. 170 ◽  
Author(s):  
Piotr Stepnowski
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Environmental Fate ◽  
Hydrophobic Interactions ◽  
Preliminary Assessment ◽  
Imidazolium Ionic Liquid ◽  
Imidazolium Cations ◽  
Soils And Sediments ◽  
Essential Parameter ◽  
Selection Of

The growing interest in the use of ionic liquids may soon result in their presence in the environment. In any evaluation of the environmental fate of these compounds, their sorption on soil is an essential parameter. This paper reports data on the sorption of ionic liquids on selected soils and marine sediments. Batch-equilibrium adsorption tests were conducted on a selection of imidazolium ionic liquid entities. All the compounds were strongly sorbed on all the soils under study. It seems that, regardless of the hydrophobic interaction with organic matter, non-hydrophobic interactions contribute to the sorption of these compounds to soils and sediments, which usually tends to occur with highly polar ionized groups such as quaternary moieties.

Antibiofilm activity of tert-BuOH functionalized ionic liquids with methylsulfonate counteranions

RSC Advances ◽  
2015 ◽  
Vol 5 (83) ◽  
pp. 68136-68142 ◽  
Author(s):  
Govinda R. Navale ◽  
Mahesh S. Dharne ◽  
Sandip S. Shinde
Keyword(s):  
Antimicrobial Activity ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Biofilm Formation ◽  
Alkyl Chain ◽  
Antibiofilm Activity ◽  
Imidazolium Ionic Liquid ◽  
Potential Antimicrobial Activity

Thetert-BuOH functionalized and dodecyl alkyl chain bearing imidazolium ionic liquid [C12-tOHim][OMs] significantly prevented biofilm formation ofS. epidermidisand showed potential antimicrobial activity.

scholarly journals On the structural origin of free volume in 1-alkyl-3-methylimidazolium ionic liquid mixtures: a SAXS and 129Xe NMR study

2019 ◽  
Vol 21 (11) ◽  
pp. 5999-6010 ◽  
Author(s):  
Cameron C. Weber ◽  
Nicholas J. Brooks ◽  
Franca Castiglione ◽  
Michele Mauri ◽  
Roberto Simonutti ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Free Volume ◽  
Alkyl Chain ◽  
Liquid Mixtures ◽  
Excess Free Volume ◽  
129Xe Nmr ◽  
Nmr Study ◽  
Chain Lengths

The structural origins of excess free volume in mixtures of ionic liquids featuring different alkyl chain lengths are identified by combining 129Xe NMR and SAXS techniques.

Thermo-physical and tribological characteristics of ionic liquid-based rice bran oil as green cutting fluid

2021 ◽  
pp. 135065012110461
Author(s):  
Aswani K Singh ◽  
Varun Sharma
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Coefficient Of Friction ◽  
Rice Bran ◽  
Alkyl Chain ◽  
Rice Bran Oil ◽  
Alkyl Chain Length ◽  
Cutting Fluid ◽  
Cutting Fluids ◽  
Base Oil

During machining, the cutting fluids play an essential role in cooling and lubrication. In order to reduce the friction forces, the excessive amount of the cutting fluids are generally used. This, in turn, leads to wastage of the cutting fluids which results in a serious impact on the environment, health and cost of production. Therefore, the judicious use of lubricants is the foremost concern in the manufacturing industry. In order to mitigate these drawbacks, various alternatives have been developed in the last decade. In the present paper, ionic liquids have been proved as favourable sustainable alternative additives in the base oil. The effect of alkyl chain length of ionic liquids with base oil on the thermo-physical and tribological characteristics of cutting fluids including viscosity, wettability, anticorrosion behaviour, thermal stability, and coefficient of friction have been analysed. In the present study, pyrrolidinium and hexafluoro-phosphate (PF6) have been used as cation and anion, respectively, with rice bran oil as base oil. The five different ionic liquids have been dispersed in base oil by 1.0 wt%. It has been found that longer alkyl chain length showed the favourable results as compared to the shorter one. Results indicated that ionic liquid based cutting fluid attained ample enhanced thermophysical and tribological properties as compared to the neat rice bran oil. There has been 5.08% and 4.29% improvement in viscosity and thermal conductivity for IL4 + RBO in comparison to neat RBO. In addition, the wettability, coefficient of friction, and wear volume have been reduced by 20.34%, 53.79% and 57.87% correspondingly.

Synthesis and application of Co(salen) complexes containing proximal imidazolium ionic liquid cores

2012 ◽  
Vol 90 (1) ◽  
pp. 60-70 ◽  
Author(s):  
Swapnil Sonar ◽  
Kenson Ambrose ◽  
Arthur D. Hendsbee ◽  
Jason D. Masuda ◽  
Robert D. Singer
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Model Compound ◽  
Veratryl Alcohol ◽  
Oxidation Catalysts ◽  
Imidazolium Ionic Liquid ◽  
Lignin Model Compound ◽  
Salen Complexes ◽  
Lignin Model ◽  
Salen Ligand

Ionic ligands derived from a salen ligand containing two proximal 1,3-disubstituted imidazolium ionic liquid cores form cobalt(III) complexes capable of selectively oxidizing veratryl alcohol, a lignin model compound, to veratraldehyde using air as the source of oxygen. These complexes are easy to prepare, inexpensive, water stable, and soluble in ionic liquids, making them viable candidates for use as oxidation catalysts.

Conductivity and Electrochemistry of Ferrocenyl-Imidazolium Redox Ionic Liquids with Different Alkyl Chain Lengths

2014 ◽  
Vol 161 (4) ◽  
pp. H161-H165 ◽  
Author(s):  
Bruno Gélinas ◽  
John C. Forgie ◽  
Dominic Rochefort
Keyword(s):  
Ionic Liquids ◽  
Alkyl Chain ◽  
Chain Lengths

Synthesis and Characterization of Super-Molecular Ionic Liquids

2011 ◽  
Vol 197-198 ◽  
pp. 906-910
Author(s):  
Hui Ru Liu ◽  
Li Qiang Lv ◽  
Xing Chen Zhang
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Melting Point ◽  
Quantum Chemical ◽  
Organic Molecules ◽  
Raw Materials ◽  
Ammonium Thiocyanate ◽  
Molar Ratio ◽  
Molecular Ion

This study concerned a novel super-molecular ionic liquid synthesized by ammonium thiocyanate and caprolactam. The physical characters such as melting point and electric conductivity were investigated. Results showed that the melting point is -12.2°C at the molar ratio of 3:1 (caprolactam/ammonium thiocyanate), which is much lower than raw materials. The electric conductivities of synthesized ionic liquids were close to that of imidazole ILs. The structure of ionic liquid was characterized by IR,1HNMR and quantum chemical calculations. It was shown that the NH4+cation connected with caprolactam organic molecules by hydrogen bonds, leading to the forming of a super-molecular ion. The electrostatic attraction of super-molecular ion with anion was decreased because of the larger volume of super-molecular ion than original cation, thus the melting point decreased. The key properties that distinguish super-molecular ionic liquid from other ILs were the presence of supermolecular ion, which can be used to build up a hydrogen-bonded network. This type ion liquid was named as super-molecular ion liquid.

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